Determination of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase in Poa pratensis induced by mechanical or biotic factors and characteristics of the assay for ACC

Investigations into the nature of ethylene production by Bipolaris sorokiniana and B. sorokiniana infected leaf blades of Poa pratensis were the main objectives of this research. Characteristics of the assay for 1-aminocyclopropane-1-carboxylic acid (ACC) synthase, the enzyme that controls ethylene formation in higher plants, were also studied;Protein was found to interfere with the determination of ACC. Interference was partly overcome by modifying the assay procedure;Methionine (Met) and ACC stimulated ethylene production in B. sorokiniana. ACC was less effective than Met in stimulating ethylene production. Met decreased fungal growth and sporulation;Infection of P. pratensis by B. sorokiniana resulted in necrosis of the afflicted tissue. It was speculated that the host-pathogen interaction involved the contribution of the fungal ACC synthetic pathway and the ethylene forming pathway of the host

Renormalization algorithm for the calculation of spectra of interacting quantum systems

We present an algorithm for the calculation of eigenstates with definite linear momentum in quantum lattices. Our method is related to the Density Matrix Renormalization Group, and makes use of the distribution of multipartite entanglement to build variational wave--functions with translational symmetry. Its virtues are shown in the study of bilinear--biquadratic S=1 chains.Comment: Corrected version. We have added an appendix with an extended explanation of the implementation of our algorith

High-Precision Numerical Determination of Eigenvalues for a Double-Well Potential Related to the Zinn-Justin Conjecture

A numerical method of high precision is used to calculate the energy eigenvalues and eigenfunctions for a symmetric double-well potential. The method is based on enclosing the system within two infinite walls with a large but finite separation and developing a power series solution for the Schr$\ddot{o}$dinger equation. The obtained numerical results are compared with those obtained on the basis of the Zinn-Justin conjecture and found to be in an excellent agreement.Comment: Substantial changes including the title and the content of the paper 8 pages, 2 figures, 3 table

Perturbation Theory with a Variational Basis: the Generalized Gaussian Effective Potential

The perturbation theory with a variational basis is constructed and analyzed.The generalized Gaussian effective potential is introduced and evaluated up to the second order for selfinteracting scalar fields in one and two spatial dimensions. The problem of the renormalization of the mass is discussed in details. Thermal corrections are incorporated. The comparison between the finite temperature generalized Gaussian effective potential and the finite temperature effective potential is critically analyzed. The phenomenon of the restoration at high temperature of the symmetry broken at zero temperature is discussed.Comment: RevTex, 49 pages, 16 eps figure

Determination of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase in Poa pratensis induced by mechanical or biotic factors and characteristics of the assay for ACC

Investigations into the nature of ethylene production by Bipolaris sorokiniana and B. sorokiniana infected leaf blades of Poa pratensis were the main objectives of this research. Characteristics of the assay for 1-aminocyclopropane-1-carboxylic acid (ACC) synthase, the enzyme that controls ethylene formation in higher plants, were also studied;Protein was found to interfere with the determination of ACC. Interference was partly overcome by modifying the assay procedure;Methionine (Met) and ACC stimulated ethylene production in B. sorokiniana. ACC was less effective than Met in stimulating ethylene production. Met decreased fungal growth and sporulation;Infection of P. pratensis by B. sorokiniana resulted in necrosis of the afflicted tissue. It was speculated that the host-pathogen interaction involved the contribution of the fungal ACC synthetic pathway and the ethylene forming pathway of the host.</p

Kitab cinta rumi; sajak-sajak ekstase dan kerinduan

lii, 284 p.; 21 cm

Disputatio XIV. Ethica De Tolerantia, Mollitie, Misericordia & Verecundia

Quam ... In ... Academia Wittebergensi, Praeside ... Dn. M. Jacobo Martini ... Proponit ... Petrus Colemannus Stetino Pomeranus. Ad diem 22. Octob. ..